Airframes
Benevolens Magister
I'm with Andy.
I only use enamels (sometimes, but rarely, acrylics) and spray at around 15 psi for general work, lowering the pressure a little for curved areas which create an acute angle between surfaces, such as wing roots.
With enamels, I normally run at around 60% thinners to 40% paint,depending on paint colour (some thinner pigments can run at 50/50), and mostly build-up the colour with multiple passes of the 'brush.
The 'pebble' effect is normally caused by high pressure, and the distance of the nozzle from the surface.
High pressure causes the paint to 'bounce' off the surface, and the distance, if too great, combined with the pressure, causes the paint (particularly acrylics) to start to dry before it has adhered to the surface.
As Andy mentioned, thinning the paint more, starting at at least 50/50 and doing some tests, should prevent this happening.
For 'tight' wing root areas, it also involves turning the model (or the 'brush) to maintain the optimum spraying angle, to prevent uneven 'spread'.
I only use enamels (sometimes, but rarely, acrylics) and spray at around 15 psi for general work, lowering the pressure a little for curved areas which create an acute angle between surfaces, such as wing roots.
With enamels, I normally run at around 60% thinners to 40% paint,depending on paint colour (some thinner pigments can run at 50/50), and mostly build-up the colour with multiple passes of the 'brush.
The 'pebble' effect is normally caused by high pressure, and the distance of the nozzle from the surface.
High pressure causes the paint to 'bounce' off the surface, and the distance, if too great, combined with the pressure, causes the paint (particularly acrylics) to start to dry before it has adhered to the surface.
As Andy mentioned, thinning the paint more, starting at at least 50/50 and doing some tests, should prevent this happening.
For 'tight' wing root areas, it also involves turning the model (or the 'brush) to maintain the optimum spraying angle, to prevent uneven 'spread'.
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